Retrieving last tag of a working tree

Retrieving last tag of a working tree

[the_jack]

I'm using msys git on Windows XP for version tracking embedded design project
in C. I mostly work with GUIs (git-gui and qgit), I use bash only when I
have to.

I need to be able to access version from software. To do that, I use tags to
mark all released versions, and that version string is written to file
version.h (the file is not tracked) by pre-build command:

#define KDK_SOFTWARE_VERSION "0.72"

Precompiler assigns this string to a variable. At this moment, version.h is
filled by python script that calls "git-describe --tag HEAD" and parses the
output. This works, but it's not quite reliable. There has to be a better
way for getting the last tag of current working tree. If I checkout an
earlier tagged version (0.70), I would need to automatically get 0.70 inside
version.h

Can anyone shed any light on this?
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Re: Retrieving last tag of a working tree

[Sitaram Chamarty]

On 2008-12-18, the_jack <josip@yopmail.com> wrote:
>
> output. This works, but it's not quite reliable. There has to be a better
> way for getting the last tag of current working tree. If I checkout an

git describe?

Re: Retrieving last tag of a working tree

[Thomas Rast]

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the_jack wrote:
> Precompiler assigns this string to a variable. At this moment, version.h is
> filled by python script that calls "git-describe --tag HEAD" and parses the
> output. This works, but it's not quite reliable. There has to be a better
> way for getting the last tag of current working tree. If I checkout an
> earlier tagged version (0.70), I would need to automatically get 0.70 inside
> version.h

'git describe' is indeed the tool for this.  You have not said in what
way it fails, so here's an educated guess:

Up until 7e425c4 (describe: Make --tags and --all match lightweight
tags more often, 2008-10-13) which will only be in 1.6.1, using --tags
does not match a lightweight tag if there is also an annotated tag
available.

-Thomas

-- 
Thomas Rast
trast@{inf,student}.ethz.ch





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